• Tax Prep Service, Circles of Mercy-Catherine's Closet, 11 Washington St., Rensselaer When: Through March 31 Cost: Free Contact: 462-0899 or http://www.circlesofmercy.orgNotes: Free tax preparation for households with a total income less than $50,000. Call for information.

• Revolutionary War Seals, Clifton Park-Halfmoon Library, 475 Moe Road, Clifton Park When: 10:30 a.m. Cost: Free Contact: 371-8622 or http://www.cphlibrary.orgNotes: Marvin Bubie traces the story of the American Revolution through the official seals of towns used in the United States since 1776. Many local municipalities around Saratoga County are represented and tell of their proud participation in one of the defining events in world history.

• Capital District Genealogical Society: Records Held by Family Search,William K. Sanford Town Library, 629 Shaker Road, Colonie When: 1 p.m. Contact: 458-9274 Notes: A genealogy organization established and run by The Church of Jesus Christ of Latter-day Saints. German and Irish special interest groups at noon; computer group, 1 p.m.; social time, 2 p.m.; speaker program, 2:30 p.m.

• St. Baldrick's Be Brave, Get Bald for Childhood Cancer Research Fundraiser, Proctors, 432 State St., Schenectady When: 1 p.m. Cost: $1 donation requested Contact: 281-0844 or http://bit.ly/StBaldricksProctorsNotes: Shave your head to support children with cancer. A benefit for pediatric research at Albany Medical Center and other hospitals.

• The Silent Language of the Landscape, Wagon House Education Center, Olana Historic Site, 5720 Route 9G, Hudson When: 10 a.m. Cost: Free Contact: 828-1872, Ext. 109 or http://www.olana.orgNotes: Join Margo Mullein and hike the trail to identify and discuss edible and medicinal qualities of plants. Then sketch an herb that you identified and have tea at the Wagon House Education Center.

• Volunteer Income Tax Assistance Tax Program, Saratoga Springs Public Library, 49 Henry St., Saratoga Springs When: Through March Contact: 584-7860 or http://www.sspl.orgNotes: A free service for taxpayers whose incomes are $49,000 or less. To participate, you need to pick up a numbered ticket on the day you plan on getting assistance. Bring appropriate official documentation. Sponsored by the IRS and state Department of Tax and Finance.

• League of Women Voters Underground Tea Party, William K. Sanford Town Library, 629 Shaker Road, Colonie When: 2:30 p.m. Cost: Free Contact: 458-9274 Notes: A discussion of voter participation in the state with Aimee Allaud, State League of Women Voters' issues specialist on government. RSVP to mdanes@nyap.rr.com. Bring a cup and saucer for tea, scones and strawberries.